Pith Number

pith:7VU2BDD6

pith:2017:7VU2BDD6NZT7VGLXMGXFGONYC7

not attested not anchored not stored refs pending

How morphological development can guide evolution

Josh Bongard, Nick Cheney, Sam Kriegman

arxiv:1711.07387 v5 · 2017-11-20 · q-bio.PE · cs.AI · cs.RO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7VU2BDD6NZT7VGLXMGXFGONYC7}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:05:32.466232Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd69a08c7e6e67fa997761ae5339b817eb25206a5228d4cbac7810849b75121e

Aliases

arxiv: 1711.07387 · arxiv_version: 1711.07387v5 · doi: 10.48550/arxiv.1711.07387 · pith_short_12: 7VU2BDD6NZT7 · pith_short_16: 7VU2BDD6NZT7VGLX · pith_short_8: 7VU2BDD6

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/7VU2BDD6NZT7VGLXMGXFGONYC7 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: fd69a08c7e6e67fa997761ae5339b817eb25206a5228d4cbac7810849b75121e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ea07c9d804ff7472e8ce9d9cc772c1d352c94eca4f0a9767f10f0366c6a6ee0",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.RO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2017-11-20T15:51:34Z",
    "title_canon_sha256": "fa027a381921d976f14bc3e2dea6c79fd8f11f1336f4a82f2d2f575f811065cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.07387",
    "kind": "arxiv",
    "version": 5
  }
}